So got the better of the boxing exchanges which permeated round one, but the Kazushi Sakuraba-trained Takahashi took the driver's seat with his grappling in the second frame and forced a tap in the waning seconds of the match. Wataru Takahashi (12-13-4) def. Tatsuya So (6-5-1) via submission (rear-naked choke) R2, 4:34